Hmm...this seems true, but how the heck did i make up 15 seconds on Susuka East in 1.5 laps with a Focus ST if there is no boost handicap?
You mean like when the lead car screws up, allowing the cars behind to close the gap, and even pass?
Now unless you have evidence that they didn't screw up, that would certainly be a possibility.
Impossible time for anyone to achieve in normal conditions unless boost/handicap is applied.
This is all the proof you really need. However, if you're still not convinced, I still have it on video. 
Wow... you still won't let it go, and still want an argument over something I'm not even arguing against.
Let's make sure you were even reading what you took the time to quote, shall we?
Or
if it has gone away...
some will still believe it hasn't no matter what, and blame any thing that they can't or wont explain on
"the boost" and like so many myths, it will live forever.
I bet there are many people who still swear they can get a specific prize car in GT3 by pressing X at
"just the right time"... but it still only works 25% of the time with four prize cars, and 33% of the time with three... go figure.
Now perhaps I should have been more clear as to not associate the boost with a complete myth (like the ability to select a prize car in GT3), but frankly, your rather school yard like taunts/challenges leave me to think you'll be unhappy unless everyone feels the exact same way that you do, despite the fact that even you must admit you do not even know what is going on.
In fact, I'm not even sure why you keep using the word boost, as you have pointed out time after time, that when you are in the lead you are punished. It seems that assuming everything you have said is true, then if anything its some form of handicap system, and not simply just a boost to those who have fallen far behind the leader.
But you have also chosen to ignore the many posts that have very different experiences with this so-called boost... which is the problem with anecdotal evidence. You seem to suggest only your personal experience should count, and everyone else who has had a different experience is just plain wrong or mistaken.
In addition, based again on anecdotal evidence alone, this "boost" apparently is much less a factor now than before... although without any official word, or scientific objective testing, all we know is that some say they have not experienced any "boost", others say it's still there. Go figure.
That said, and I'll say it again, even
IF this so-called "boost", or better yet, handicap system was or is removed, there will be plenty of people who will never believe it, and will for years to come forever believe the "boost" never went away.
After all, it was scientifically and objectively proven that there was no way to bypass the random prize selection process in GT3... and yet despite that, rumors of it's existence continue to this day.